AC Muscle & Classic Car Differentials

Speedway Motors employee Alanna C. walks through the how-to of installing the Vintage Air A/C in her 1965 Ford Mustang.

Who gets your pick as the best manufacturer from the golden age of the muscle car wars?

Comparing open diff vs limited slip vs locker differentials. Learn how each works, pros and cons, and which is best for your build.

Learn what gear oils do for your differential and how to choose the best gear lubricant for your application's needs

If you had to pick only one-is it a hot rod or a muscle car?

Prepare your classic muscle car for autocross competition by exploring the best options, beginner tips, and essential suspension upgrades.

GM’s 10-bolt rear axle has been around since the 1960s, here’s how to determine if your junkyard find is worth taking home

These days, muscle cars aren't just for straight line blasts down the dragstrip. Here's a primer on some of the trick hardware that's available to make your muscle car into a corner carving Pro Touring car that can do it all.

The pros and cons of a welded diff vs open diff, plus what to know before learning how to weld your differential.

I'm sorry to have to tell you this, but the '64 GTO was not the first muscle car.